摘要
氧化石墨烯/壳聚糖复合材料稳定性高,物理机械性能好受到广泛研究。通过溶液共混法制备了羧基化石墨烯/壳聚糖复合材料,并考察其对Pb(Ⅱ)吸附性能。研究结果表明:复合材料对Pb(Ⅱ)的吸附量随pH值的上升呈现先上升后下降的趋势,对100 mg/L的Pb(Ⅱ)最佳吸附条件是pH值为5,复合材料使用量为1.0 g/L,吸附时间300 min,此时吸附量为95.45 mg/g,吸附率为95.45%。吸附过程符合Langmuir等温线和拟二级动力学模型,说明该吸附过程为单层吸附和化学吸附。
Graphene oxide/chitosan composites have high stability and good physical and mechanical properties and have been widely studied.Carboxylated graphene/chitosan composites were prepared by solution blending method,and their adsorption properties for Pb(Ⅱ)were investigated.The research results show that the adsorption amount of Pb(Ⅱ)by the composite material first increases and then decreases with the increase of pH value.The optimum adsorption condition for 100 mg/L Pb(Ⅱ)is pH value of 5.The adsorption amount is 1.0 g/L,and the adsorption time is 300 min.At this time,the adsorption amount is 95.45 mg/g,and the adsorption rate is 95.45%.The adsorption process conformed to the Langmuir isotherm and pseudo-second-order kinetic model,indicating that the adsorption.
作者
姚庆达
黄鑫婷
王小卓
梁永贤
许春树
左莹
YAO Qing-da;HUANG Xin-ting;WANG Xiao-zhuo;LIANG Yong-xian;XU Chun-shu;ZUO Ying(Fujian Key Laboratory of Green Design and Manufacture of Leather,Jinjiang 362271,China;Xingye Leather Technology Co.,Ltd.National Enterprise Technical Center,Jinjiang 362261,China;Weizheng Intellectual Property Technology Co.,Ltd.,Shenzhen 518000,China;Jinjiang Testing Institute of Quality and Metrology,Jinjiang 362200,China)
出处
《中国皮革》
CAS
2023年第4期1-7,共7页
China Leather
基金
泉州市科技计划项目(2020G038R)。
